The Shadow Door could be used up to a distance of one kilometer at the farthest. Normally, such a distance was considered very far, but it also had a drawback. In complicated terrain like the mountains, it would be difficult to see the actual situation at a distance farther than tens to hundreds of meters. Therefore, it was impossible to accurately drop the TNT through the Shadow Door onto the target.
But fortunately, Ren Xiaosu still had Old Xu at his disposal. He did not even have to personally be there and Old Xu would guide him accurately on where to drop the TNT.
From the sound of things, it seemed like the combination of Old Xu and the Shadow Door was really quite high tech.
Next to him, P5092 watched quietly as Ren Xiaosu threw out three satchels of TNT one by one. Explosions could be heard in the distance. Then Ren Xiaosu said to him, "Alright, I'll go over and take a look at the situation. Y'all stay here for now."